You don't have a problem. First of all, there are TWO places to insert disks. The one right on the body of the computer is for Sonny's floppy disk; the external one is for Henrik's Zip disk, which you will find later.
Just click on the computer, then click on the dark screen to light it up. Then you should see the icons on the right. The top one for your (Nancy's) files, the second one for Sonny's stuff, and later on, the third one for Henrik's.